Package org.apache.unomi.shell.migration.utils

Class MigrationUtils

java.lang.Object

org.apache.unomi.shell.migration.utils.MigrationUtils

public class MigrationUtils
extends Object

Author:

dgaillard

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	MigrationUtils.ScrollCallback

Constructor Summary

Constructors

Constructor	Description
MigrationUtils()

Method Summary

Modifier and Type	Method	Description
static String	buildIndexCreationRequest(String baseIndexSettings, String mapping, MigrationContext context, boolean isMonthlyIndex)
static String	buildIndexCreationRequestWithRollover(String baseIndexSettings, String mapping, MigrationContext context, String lifeCycleName, String rolloverAlias)
static String	buildRolloverPolicyCreationRequest(String baseRequest, MigrationContext migrationContext)
static void	bulkUpdate(org.apache.http.impl.client.CloseableHttpClient httpClient, String url, String jsonData)
static void	cleanAllIndexWithRollover(org.apache.http.impl.client.CloseableHttpClient httpClient, org.osgi.framework.BundleContext bundleContext, String esAddress, String prefix, String indexName)
static void	configureAlias(org.apache.http.impl.client.CloseableHttpClient httpClient, String esAddress, String alias, String writeIndex, Set<String> readIndices, String configureAliasBody, MigrationContext context)
static org.json.JSONObject	continueQueryWithScroll(org.apache.http.impl.client.CloseableHttpClient httpClient, String url, String scrollId)
static void	deleteByQuery(org.apache.http.impl.client.CloseableHttpClient httpClient, String esAddress, String indexName, String requestBody)	Deletes documents from an index based on a specified query.
static void	deleteIndex(org.apache.http.impl.client.CloseableHttpClient httpClient, String esAddress, String indexName)
static String	extractMappingFromBundles(org.osgi.framework.BundleContext bundleContext, String fileName)
static String	getFileWithoutComments(org.osgi.framework.BundleContext bundleContext, String resource)
static Set<String>	getIndexesPrefixedBy(org.apache.http.impl.client.CloseableHttpClient httpClient, String esAddress, String prefix)
static boolean	indexExists(org.apache.http.impl.client.CloseableHttpClient httpClient, String esAddress, String indexName)
static void	moveToIndex(org.apache.http.impl.client.CloseableHttpClient httpClient, org.osgi.framework.BundleContext bundleContext, String esAddress, String sourceIndexName, String targetIndexName, String painlessScript)
static org.json.JSONObject	queryWithScroll(org.apache.http.impl.client.CloseableHttpClient httpClient, String url)
static void	reIndex(org.apache.http.impl.client.CloseableHttpClient httpClient, org.osgi.framework.BundleContext bundleContext, String esAddress, String indexName, String newIndexSettings, String painlessScript, MigrationContext migrationContext, String migrationUniqueName)
static String	resourceAsString(org.osgi.framework.BundleContext bundleContext, String resource)
static void	scrollQuery(org.apache.http.impl.client.CloseableHttpClient httpClient, String esAddress, String queryURL, String query, String scrollDuration, MigrationUtils.ScrollCallback scrollCallback)
static void	updateByQuery(org.apache.http.impl.client.CloseableHttpClient httpClient, String esAddress, String indexName, String requestBody)	Updates documents in an index based on a specified query.
static void	waitForTaskToFinish(org.apache.http.impl.client.CloseableHttpClient httpClient, String esAddress, String taskId, MigrationContext migrationContext)
static void	waitForYellowStatus(org.apache.http.impl.client.CloseableHttpClient httpClient, String esAddress, MigrationContext migrationContext)	Utility method that waits for the ES cluster to be in yellow status

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MigrationUtils

public MigrationUtils()

Method Details

queryWithScroll

public static org.json.JSONObject queryWithScroll(org.apache.http.impl.client.CloseableHttpClient httpClient,
 String url)
                                           throws IOException

Throws:

IOException

continueQueryWithScroll

public static org.json.JSONObject continueQueryWithScroll(org.apache.http.impl.client.CloseableHttpClient httpClient,
 String url,
 String scrollId)
                                                   throws IOException

Throws:

IOException

bulkUpdate

public static void bulkUpdate(org.apache.http.impl.client.CloseableHttpClient httpClient,
 String url,
 String jsonData)
                       throws IOException

Throws:

IOException

resourceAsString

public static String resourceAsString(org.osgi.framework.BundleContext bundleContext,
 String resource)

getFileWithoutComments

public static String getFileWithoutComments(org.osgi.framework.BundleContext bundleContext,
 String resource)

indexExists

public static boolean indexExists(org.apache.http.impl.client.CloseableHttpClient httpClient,
 String esAddress,
 String indexName)
                           throws IOException

Throws:

IOException

configureAlias

public static void configureAlias(org.apache.http.impl.client.CloseableHttpClient httpClient,
 String esAddress,
 String alias,
 String writeIndex,
 Set<String> readIndices,
 String configureAliasBody,
 MigrationContext context)
                           throws IOException

Throws:

IOException

getIndexesPrefixedBy

public static Set<String> getIndexesPrefixedBy(org.apache.http.impl.client.CloseableHttpClient httpClient,
 String esAddress,
 String prefix)
                                        throws IOException

Throws:

IOException

cleanAllIndexWithRollover

public static void cleanAllIndexWithRollover(org.apache.http.impl.client.CloseableHttpClient httpClient,
 org.osgi.framework.BundleContext bundleContext,
 String esAddress,
 String prefix,
 String indexName)
                                      throws IOException

Throws:

IOException

extractMappingFromBundles

public static String extractMappingFromBundles(org.osgi.framework.BundleContext bundleContext,
 String fileName)
                                        throws IOException

Throws:

IOException

buildIndexCreationRequest

public static String buildIndexCreationRequest(String baseIndexSettings,
 String mapping,
 MigrationContext context,
 boolean isMonthlyIndex)
                                        throws IOException

Throws:

IOException

buildIndexCreationRequestWithRollover

public static String buildIndexCreationRequestWithRollover(String baseIndexSettings,
 String mapping,
 MigrationContext context,
 String lifeCycleName,
 String rolloverAlias)
                                                    throws IOException

Throws:

IOException

buildRolloverPolicyCreationRequest

public static String buildRolloverPolicyCreationRequest(String baseRequest,
 MigrationContext migrationContext)
                                                 throws IOException

Throws:

IOException

moveToIndex

public static void moveToIndex(org.apache.http.impl.client.CloseableHttpClient httpClient,
 org.osgi.framework.BundleContext bundleContext,
 String esAddress,
 String sourceIndexName,
 String targetIndexName,
 String painlessScript)
                        throws Exception

Throws:

Exception

deleteIndex

public static void deleteIndex(org.apache.http.impl.client.CloseableHttpClient httpClient,
 String esAddress,
 String indexName)
                        throws Exception

Throws:

Exception

reIndex

public static void reIndex(org.apache.http.impl.client.CloseableHttpClient httpClient,
 org.osgi.framework.BundleContext bundleContext,
 String esAddress,
 String indexName,
 String newIndexSettings,
 String painlessScript,
 MigrationContext migrationContext,
 String migrationUniqueName)
                    throws Exception

Throws:

Exception

scrollQuery

public static void scrollQuery(org.apache.http.impl.client.CloseableHttpClient httpClient,
 String esAddress,
 String queryURL,
 String query,
 String scrollDuration,
 MigrationUtils.ScrollCallback scrollCallback)
                        throws IOException

Throws:

IOException

waitForYellowStatus

public static void waitForYellowStatus(org.apache.http.impl.client.CloseableHttpClient httpClient,
 String esAddress,
 MigrationContext migrationContext)
                                throws Exception

Utility method that waits for the ES cluster to be in yellow status

Throws:

Exception

updateByQuery

public static void updateByQuery(org.apache.http.impl.client.CloseableHttpClient httpClient,
 String esAddress,
 String indexName,
 String requestBody)
                          throws Exception

Updates documents in an index based on a specified query.

This method sends a request to update documents that match the provided query in the specified index. The update operation is performed asynchronously, and the method waits for the task to complete before returning.

Parameters:

httpClient - the CloseableHttpClient used to send the request to the Elasticsearch server

esAddress - the address of the Elasticsearch server

indexName - the name of the index where documents should be updated

requestBody - the JSON body containing the query and update instructions for the documents

Throws:

Exception - if there is an error during the HTTP request or while waiting for the task to finish

deleteByQuery

public static void deleteByQuery(org.apache.http.impl.client.CloseableHttpClient httpClient,
 String esAddress,
 String indexName,
 String requestBody)
                          throws Exception

Deletes documents from an index based on a specified query.

This method sends a request to the Elasticsearch cluster to delete documents that match the provided query in the specified index. The deletion operation is performed asynchronously, and the method waits for the task to complete before returning.

Parameters:

httpClient - the CloseableHttpClient used to send the request to the Elasticsearch server

esAddress - the address of the Elasticsearch server

indexName - the name of the index from which documents should be deleted

requestBody - the JSON body containing the query that defines which documents to delete

Throws:

Exception - if there is an error during the HTTP request or while waiting for the task to finish

waitForTaskToFinish

public static void waitForTaskToFinish(org.apache.http.impl.client.CloseableHttpClient httpClient,
 String esAddress,
 String taskId,
 MigrationContext migrationContext)
                                throws IOException

Throws:

IOException